Add the possibility to have a multi-column PK in realtime

[iruizmar]

What kind of change does this PR introduce?

Feature

What is the current behavior?

The realtime API doesn't allow to have a multi-column PK.

What is the new behavior?

The realtime API now works with multi-column PKs.

Additional context

https://kotlinlang.slack.com/archives/C06QXPC7064/p1716652456870609

I couldn't really test this. What's the usual strategy to test the library?

[jan-tennert]

Okay, it seems this might take more changes than expected. You can fix the selectAsFlow method by just taking the primary key values and combining them yourself. Something like this:

cache.remove(primaryKeys.map { key -> it.oldRecord[key.columnName]?.jsonPrimitive?.content }.joinToString(""))

(not sure if that works exactly).
For the single flow variant, I'm not sure if that's possible as we can only provide one filter for realtime

[iruizmar]

Okay, it seems this might take more changes than expected. You can fix the selectAsFlow method by just taking the primary key values and combining them yourself. Something like this:

cache.remove(primaryKeys.map { key -> it.oldRecord[key.columnName]?.jsonPrimitive?.content }.joinToString(""))

(not sure if that works exactly). For the single flow variant, I'm not sure if that's possible as we can only provide one filter for realtime

I made the changes. Can you test that again? 🙏🏻

[jan-tennert]

Yes, I think that should work. Can you add List<KProperty1<Data, Value>> overloads (like the other overload for PrimaryKey, so you can just use this syntax: selectAsFlow(listOf(Message::id, Message::channelId))

[iruizmar]

Yes, I think that should work. Can you add List<KProperty1<Data, Value>> overloads (like the other overload for PrimaryKey, so you can just use this syntax: selectAsFlow(listOf(Message::id, Message::channelId))

Oh, I don't know why I missed those. Done ✅.

[jan-tennert]

Also, I normally just use the blank test module which is included in the gradle project. (But in the gitignore, so not in the repo).
Alternatively, you can also publish the dependencies to maven local. I plan on improving this soon with the samples

[jan-tennert]

Great! I'm going to include this in the upcoming 2.5.0 beta, so you can try it out yourself!